Question

I’m relatively new to C++, I start by reading C++ Primer 4th edition. It has a section explains about Pointers and Typedefs, start with bellowing code.

typedef string *pstring;
const pstring cstr;

I know that after I define typedef string *pstring; I can use *pstring to declare string variable in my code.

*pstring value1; // both of these line are identical,
string value2; // value 1 and value2 are string

The book continue with const pstring cstr1; and *const string cstr2; are identical. I don’t understand why they’re same declaration?

Answer 1

They are not identical.

 pstring v1;  // declares a pointer to string
 string v2;  // declares an object of type string
 string* v3;  // this is the same type as v1